Visual/Physical Inspection

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Inspect for aftermarket devices which could affect the operation of the HVAC System.
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Verify the A/C compressor clutch turns freely and is not seized.
Verify that the customer is using the correct key to enable personalization and is not inadvertently activating steering wheel or passenger HVAC controls, if equipped.
The A/C compressor will not operate in cold ambient air temperatures.
The following conditions may cause window fogging:
- Wet Carpet Or Mats
- High Humidity
- Interior Water Leak
- Blocked A/C Evaporator Drain Tube
- Maximum Passenger Capacity
- Blocked Body Pressure Relief Valves
Inspect the air distribution system for causes of reduced air flow:
- Obstructed Or Dirty Passenger Compartment Air Filter, If Equipped
- Blocked Or Damaged Air Inlet Or Outlet Vents